Personal Finance SIP vs lump sum: Which is better for ELSS investment? Updated : February 27, 2020 06:17 AM IST An SIP mode of investment provides the benefit of rupee cost averaging. Another advantage that an SIP has over the lump sum mode is the lock-in period. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.